pub struct NotSet;Expand description
Sentinel value for unset optional fields.
Trait Implementations§
impl Copy for NotSet
Auto Trait Implementations§
impl Freeze for NotSet
impl RefUnwindSafe for NotSet
impl Send for NotSet
impl Sync for NotSet
impl Unpin for NotSet
impl UnwindSafe for NotSet
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, _span: NoopSpan) -> Self
fn instrument(self, _span: NoopSpan) -> Self
Instruments this future with a span (no-op when disabled).
Source§fn in_current_span(self) -> Self
fn in_current_span(self) -> Self
Instruments this future with the current span (no-op when disabled).